Coupons usually come out about every 12 weeks, so cut, clip and organize them in a way that works for you. I like big binders with each section divided. Some Extreme Couponers have even gone so far as to make a list of each isle in the grocery store with each product in that isle! I haven't gone that far yet, but we will see!
Find sites that will mail you coupons like http://www.save.ca/, http://www.webasaver/, and many more. I will post these under the "Tips and Tricks" tab.
Good luck, happy shopping and I will see you at the till!